carly7575
carly7575
17-12-2021
Mathematics
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PLEASE HELP!!!!
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Snor1ax
Snor1ax
17-12-2021
Ev = log2 (N2/t)
-3 = log2 (2^2/x)
log2(2^2/x)=-3
log2(4/x)=-3
4/x=2^-3 - Convert into exponential using log n(x) = b is equal to x= a^b
4/x = 1/2^3
4/x = 1/8
32 = x
Therefore, the exposure is 32 seconds
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